Does the GRE Subject Test actually matter?

[genotype]

I am wondering if a high score on a GRE subject test can actually make a difference to an ad com. I have been out of school for several years working in a different field but have always intended to return to grad school in science. I am worried that ad coms will be skeptical because I haven't been immersed in science for a long time. Do you think a good subject test score could actually help convince them that I do know the material? I have kept up on it while I have been out of school, which I am really grateful for now that I had to retake the GRE.

I would appreciate any opinions you all may have on this topic.